|1959||Nihon Tekko Co., Ltd., our predecessor, established at the address of the present headquarters|
|1961||Cold spinning production line set up; head plate operations begin.|
|1962||Second cold spinning production line added
Nihon Tekko Kyushu Factory opens in Kokura, Kitakyushu-shi.
|1963||Cold spinning production line added at Headquarters Factory|
|1964||Cold spinning production line added at Kyushu Factory
Cold spinning production line added at Headquarters Factory
|1965 to 1966||Head Plate Department spun off as Nippon Kyohan Kogyo Co., Ltd.; Nippon Kyohan Kogyo begins operating.
Kyushu Branch opened in Kokura
|1967||Established Taiwan End-Plate Co., Ltd., a joint venture, in Taipei, Taiwan
Opened Hokuriku Branch in Kanazawa-shi, Ishikawa
|1968||Taipei Factory at Taiwan End-Plate completed and cold spinning production line installed
Hokuriku Factory completed in Matto-shi (present Hakusan-shi), Ishikawa; cold spinning production line installed. Factory begins operating as part of the Hokuriku Division.
|1969||Large West German flanging machine installed at Headquarters Factory
Taipei Factory at Taiwan End-Plate installs second cold spinning production line.
Construction of a factory with two production lines, including a West German large flanging machine, begins in Yashio-shi, Saitama.
|1970||Kanto Factory (former Kanto Factory 1) completed; Kanto Division established. Production and sales of head plates begin.|
|1972||Taipei Factory at Taiwan End-Plate installs production equipment for large spherical tanks.
Kanto Factory (former Kanto Factory 1) achieves JIS mark certification.
|1973||Nihon Tekko relocated; the headquarters assumes oversight of head plate factory.
Headquarters Factory introduces fully automatic dishing press with manipulator made in West Germany.
|1974||Headquarters Factory introduces West German mid-sized flanging machine.|
|1975||Kanto Factory (former Kanto Factory 1) introduces manipulator for fully automatic dishing press.|
|1976||Hokuriku Factory obtains first class pressure vessel manufacturing license from the Labor Ministry (the present Health, Labor and Welfare Ministry).|
|1977||Headquarters Factory spun off from the headquarters to Kansai Division and Kansai Factory; Kyushu Branch incorporated into Kansai Division. Kanto Factory (former Kanto Factory 1) obtains first class pressure vessel manufacturing license from the Labor Ministry (the present Health, Labor and Welfare Ministry).
Construction of a factory with large spherical tank production equipment and hot/cold spinning head plate production equipment begins in Kaosiung, Taiwan.
|1978||Kaosiung Factory completed in Taiwan. Operations begin.|
|1979||Construction of Kanto Factory 2 begins in Ibaraki Prefecture.|
|1980||Completion of Kanto Factory 2. The factory launches planned production as a cold one press forming factory using 3,000-ton fully automatic double-action deep drawing hydraulic press.|
|1981||Kanto Factory 2 achieves JIS mark certification.|
|1982||Large fully automatic dishing press with manipulator installed at Kansai Factory|
|1985||Large fully automatic dishing press with manipulator installed at Kanto Factory 1|
|1986||Completion of canning factory at Hokuriku Factory (Stage 1)|
|1987||Kansai Factory installs 800-ton fully automatic die cushion deep drawing hydraulic press. Factory begins planned production with small-diameter cold one press forming.
Canning factory completed at Hokuriku Factory (Stage 2)
|1988||Kyushu Factory introduces manipulator for fully automatic press.|
|1990||Kanto Factory 1 introduces mid-sized flanging machine.
Canning factory completed at Hokuriku Factory (Stage 3)
Hokuriku Factory introduces self-traveling dual welding robot and laser cutting machine.
|1991||Kanto Factory 1 obtains boiler welding and manufacturing license from the Labor Ministry (the present Health, Labor and Welfare Ministry).|
|1993||Kanto Factory 2 for 9,000-ton hydraulic press completed|
|1994||Kanto Factory 2 begins operating 9,000-ton fully automatic double-action deep drawing hydraulic press; also begins planned production of products of diameters of 2,000+ mm.|
|1995||Kansai Division obtains ISO 9002 certification, a first for the head plate industry.|
|1997||Kanto Factory 2 upgrades 3,500-ton fully automatic double-action deep drawing hydraulic press.|
|1999||Kansai Factory introduces special spinning machine.|
|2000||Materials cutting factory completed at Kanto Factory 2
Kanto Factory 2 introduces NC plasma cutting equipment.
|2001||Kanto Factory 2 introduces laser cutting machine./td>|
|2002||Kanto Factory 2 introduces 1,800-ton fully automatic deep drawing hydraulic press with die cushion.
Kanto Factory 1 introduces mid-sized special spinning machine.
|2005||Sales Department for Head Plate Division registered for ISO 9001 assessment|
|2006||Spinning yard factory completed at Kanto Factory 2
Kanto Factory 1 relocated to and merged with Kanto Factory 2; collective operations renamed Kanto Factory
|2007||Offices at Kanto Factory and Kanto Sales Department renovated
Kanto Factory at Head Plate Division registered for ISO 9001 assessment
Head Plate Division obtains ISO 9001 certification for all departments.
Kanto Factory upgrades 300-ton fully automatic deep drawing hydraulic press.
|2008||Hokuriku Factory upgrades 1,000-ton hydraulic press.|
|2009||Chemical Engineering Division obtains ISO 9001 certification.|
|2011||Representative office opens in Hanoi, Vietnam.|
|2011||RK Engineering Co., Ltd., a Vietnam-based affiliate, established in Hai Phong, Vietnam
Kanto Factory introduces mid-sized turning lathe.
|2012||Kansai Factory upgrades 1,000-ton large fully automatic dishing press with manipulator.|
|2013||RK Engineering Co., Ltd. introduces 300-ton fully automatic dishing press with manipulator, a mid-sized spinning machine, and a heat treatment furnace.
Kansai Factory introduces bending machine.
|2014||RK Engineering Co., Ltd. introduces submerged arc welding machine with manipulator.|
|2015||Hokuriku Factory introduces a 200-ton press brake.
Kansai Factory introduces plasma welding machine.